Annual report pursuant to section 13 and 15(d)

Common Stock - Additional Information (Detail)

v2.4.0.6
Common Stock - Additional Information (Detail)
Dec. 31, 2012
Feb. 28, 2010
Feb. 25, 2010
Dec. 31, 2009
Dec. 21, 2009
Sep. 30, 2005
Kingstone Warrants
Sep. 09, 2005
Kingstone Warrants
Stockholders Equity Note [Line Items]              
Total Shares Subject to Warrants 485,953            
Warrant expiration period   3 years         10 years
Warrants issued     196,766   935,040   289,187
Warrants exercise price   6.43   5.08   4.30